Shaft-log and stuffing-box structure



July 19, 1932.

w. M. HORN SHAFT LOG AND STUFFING BOX STRUCTURE Filed No v. 29, 1930 8 ix x A TTORNEY Patented July 19, 1932 1 UNITED STATES PATENT arm WILLIAM 1m HORN, orjnmr'ron, vrnernm, Assreivon ro HORACE n. nonen norm: 8; PLANE CORPORATION, on NEW YORK, 1v.- 1., nconrona rron' or DELAWAR sm'r-Loe AND STUFFIN'G-BOX srrnuo'ronn Application filed November29, 1930. Serial No. 499,012.,

My invention relates to improvements in a shaft-log and stufling-box construction for motor boats and the-like andis more par ticularly directed to a combined self-aligning 5 shaft-log and stufling-box structure.

. Shaft-logs have been utilized heretofore for encasing the propeller shafts of watercraft, and packingglands or stuffing-boxes have been employed in connection therewith. However, in prior constructions no simple provision has been made for variations in shaft alinement, for example, such variations as might occur by removal and replacement of the motor and from other causes.

Among the objects of my invention are, to provide a imple and efiicient shaft-log and stuifing-box structure embodying automatically operable means for aligning the motor shaft associated therewith; to provide a device of the character stated embodying resilient means interposed between an end of the shaft-log and the stuffing-box; and to provide yielding means for connecting the shaft-log member and the stufling-box.

My invention may be readily understood from the following description taken in connection with the accompanying drawing, which illustrates a preferred embodiment, and wherein:

Fig. 1 is a top plan view of stuffing-box device constructed in accordance with my invention;

Fig. 2, a longitudinal section taken on the line II--II of Fig. 1;

Fig. 3, an enlarged part elevational view and a part sectional view, the section being taken on line III-J11 of Fig. 2;

Fig. 4, a detail sectional view taken on the line IVIV of Fig. 3.

Referring to the drawing, 2 designates thepropeller shaft of a motor boat or other vehicle, which is coupled with a motor (not shown) and extends downwardly and rear wardly through the keel or bottom 3 of the boat in an inclined relation, an opening 4 beingformed in said keel for that purpose. To seal the opening 4:, the shaft 2 is passed through a shaft-log or shaft-log casing A, the latter being fixedly secured to the keel 3 over said opening, as by means of bolts .01

a shaft-log and I screws 5 passed through laterally extending 5:

securing flanges 6, constituting vportionsnof the shaft-log structure. L

The shaft log includes ahollow body portion 7, adapted to receive thepropellershaft 2. The body -7 is U-shaped'in cross section and open at the bottom between the lateral flanges 6. Theforward upper end of the casing is formedwith an'integral outwardly projecting means orv flange 8,; adapted to be disposed in a plane at right angles to' the" axis of the propeller shaft 2.} r l y 1 Spaced forwardly of the flange 8 of cas' ing A a'stufling box BL, Stufling-box B comprises" a' hollow sleeve, having], a right angle, flange- 1O integral therewithan'd an externally threaded portion llladaptedto receive ahjollow threaded gland unit or st'ufling-box nut 12. Gland 12 carries suitable packi g 13 adapted to be compressed against the shaft 2 and the endof the sleeve 9, to

effect sealing in the usual manner. 1 L des: ignates a lock-nut mounted on the'sleeve 9.

Positioned between the members or flanges 8 and 10, I provide a resilient block or" align ing member C, this member being preferably formed of rubber or other suitable resilient material, and having a central opening 15 therethroug'h,through' which; the shaft 2*is adapted to be passed. The" respective end faces of the member G and theflanges'S and .10-are in contact, said member and flanges being substantially oval in configuration whereby they extend laterally to receive ret'aining members or bolts 16 passed through suitable aligned openings therein. 7 1

. Members 16 are provided with adjustable abutments or nuts-17, and are of suflioient length to extend spective flanges;v

8 ,and-%10,.1 Su ta le sp ing at .eachend beyond the re I 1 .90 18jare'pos1tion d. on e h of d. .ret i in members between the abutments thereof and the; flan es 8 and. 10. In this manner, the stuffing, ox. or packing gland B is secured to the shaft-logA, permitting an angular 111e, shaft-log and the resilient memb 0 is clamped in sealing relation with "and betWeenthe'flanges'S andlO.

as displacement. jof the shaft; with respect to the spring-pressed retaining members '16 which permit an angulardisplacement of the stuffing-box B,w ith respectto the shaft-log A. So, also, should themotor'be removed and replaced; any slight variation in the alignment thereof will be taken up in the shaft-log. The bolt openings 19 .in the flanges 8 and 10,mayjbe'increased'in size I to permit of agreater range of angular mis ali nment. ,c

arious additions and modifications are contemplated, provided they fall' within the sco e of the following claims. a

.claim; a

a shaft-log member, a stuflingbox, resilient means interposed between the shaft-log member and the stuffing-box, and yielding and bolts connectingsaid'flanges.;'l, a

' '6. The combination of' a shaft-log" having .a flanged inner end,a;stufling-box" having a 1. In a device of the character described,

for permitting angular displacement of one" of said members relative to the other.

'5. The combination of a shaft-log having, I a flanged inner end, a stuffing-box having a coordinate flange, and means for yieldingly 7 connecting :theStufiing-box to the shaft-logy to permitlateral movements of'the stufiingbox said means comprising a perforate resilient block interposed between said. flanges,

coordinate flange, and means for yieldingly connecting the'stufling-box to the shaft-log to permit lateral movements of the stuf fing box said means comprising a perforate resilient blockinterposed between said flanges,-and connecting bolts traversing reg? istering holes in the flanges and the resilient block Y In testimony-whereof I aflix my signa- WILLIAM HORN;

meansconnecting the aforesa d memberand and stuffing-box andflclamping said resilient means in sealing'relation with said" member and stulfi'ng box. 1 Z j 2.: In a device of the character described,

a shaft-'loglmember, a stnffing-box, resilient means interposed between the shaft-log member and the stufiing box, and means connect:

ing the aforesaid member and. stuffing-box, 71

said connecting means. including' amember having abutments thereon and a spring-1nterposed between the shaft-log member and an abutment anda spring interposed be tween the stufling-box andan abutment.

"3. In a device ofthe character described,

v the combination with a'shaft-log member having t a hollow body for thereception-of a shaand having a flanged. end portion,

of a stufiing-box member having a flanged end portion associatedcwith the shaft-log I member, resilient means interposed between said flanged end portions-for permitting angular displacement of one of-said mem- 1 bers relative to theiother, and yielding means connecting the Iflanges of; the respective flanged ends and clamping the resilient means between said ends; a I 4; In a'device of'thecharacterdescribed, the combination with a shaft-log member having a hollow' body for'thereception' of r a shaft, a projecting end element'carried by the shaft-log member, of: a stuffing-box m er, a prOj ecting end element carried the stuifing-box, resilient. means interposed between the said elements,members having abutments thereon- .for connecting, said end elements, and springs interposed betweenan abutment and the respective end elements ifs 

